161results about "Line-faulsts/interference reduction" patented technology

The invention relates to the technical field of high-frequency multichannel synchronous transmission, in particular to a time domain reflection compensation design method for high-frequency signal transmission loss, which comprises the following steps of: 1, responding to a synchronous trigger signal to generate an active reflection reference signal with a determined time domain position; 2, aligning time marks between channels through cross-correlation operation; 3, extracting a reflection feature template of the channel from the alignment signal, and recognizing and eliminating crosstalk components through convolution operation with an adjacent channel template; 4, constructing a time-varying transfer function model according to the amplitude envelope attenuation characteristic and the carrier phase jump characteristic of the reflection characteristic template; and 5, generating a compensation filter based on the time-varying transfer function model, and verifying the compensation effect through secondary reflection. Through cross-correlation operation, accurate alignment of multi-channel signal time scales is realized, the time delay difference between different transmission channels is overcome, signal synchronization of each channel is ensured, and the beam forming precision is improved.

The invention discloses a high-integration intelligent ignition head device and an automobile safety communication power supply system thereof. The device comprises an input unit, a power management module, a communication module, a communication judgment module, an MCU, a voltage sensing module, a current sensing module, an ignition control module, an ignition element and a substrate, and an environment self-adaption unit, a dual-mode wireless energy supply unit and an optical fiber diagnosis channel can be additionally arranged. The system adopts the device, communicates with a central control unit through a redundant optical fiber bus and a double-wire bus, and further comprises the central control unit, a dynamic topology reconstruction unit and a pre-ignition energy distribution unit. Through digital signal control, multi-dimensional sensing module integration and a double-wire bus topological structure, ignition threshold multi-stage protection, state real-time monitoring and feedback, multi-ignition-head parallel independent control and miniaturized function integration are achieved, and the reliability, the intelligent degree and the driving efficiency of an automobile safety system are improved.

Joint denoising and compression of channel state information (CSI) feedback may be performed. An example device may include a processor configured to perform one or more actions. The device may receive configuration information that indicates a latent mode of operation and an encoder model. The device may receive CSI reference signals from a network node. The device may generate an estimated channel matrix based on the CSI reference signals. The device may generate a latent representation of the estimated channel matrix based on the latent mode of operation and the encoder model. The device may send the latent representation of the estimated channel matrix to the network node.

The invention discloses an environmental interference suppression method and system applied to a multi-source repeater signal, relates to the technical field of signal interference, and comprises the following steps: configuring basic parameters of a target repeater according to base station information, avoiding conflicts with conditions of surrounding base stations during subsequent environmental interference suppression and gain, providing a basis for subsequent suppression, and improving the interference suppression efficiency. And safe operation of peripheral base stations is ensured. A terrain interference index and a boundary range between different terrain types are defined, a reliable basis is provided for interference evaluation, and the description precision of an interference model is improved. Regional classification is carried out on interference conditions in a coverage range of a target repeater through a terrain interference model, an environment interference suppression strategy is set for each level of region, and evaluation and feedback adjustment are carried out on the environment interference suppression strategy by virtue of a suppression effect parameter table, so that closed-loop adjustment and feedback of suppression measurement are realized; the signal propagation effect is improved, and the adaptability and reliability of environmental interference suppression are ensured.

Examples described herein include systems and methods which include wireless devices and systems with examples of full duplex compensation with a self-interference noise calculator. The self-interference noise calculator may be coupled to antennas of a wireless device and configured to generate adjusted signals that compensate self-interference. The self-interference noise calculator may include a network of processing elements configured to combine transmission signals into sets of intermediate results. Each set of intermediate results may be summed in the self-interference noise calculator to generate a corresponding adjusted signal. The adjusted signal is received by a corresponding wireless receiver to compensate for the self-interference noise generated by a wireless transmitter transmitting on the same frequency band as the wireless receiver is receiving.

The invention relates to the technical field of compressed sensing, and particularly discloses a sparse adaptive system identification method and system based on inverse QR decomposition, and the method comprises the steps: a receiving signal obtaining step: transmitting a transmitting signal to a detected target, and then obtaining a receiving signal, the receiving signal comprises a direct coupling interference signal and a target signal; an estimation signal obtaining step of obtaining an estimation signal corresponding to the transmitting signal based on the transmitting signal through an adaptive filtering model based on inverse QR decomposition; and an identification step: eliminating the direct coupling interference signal through the estimation signal to obtain the target signal.

The invention discloses a holographic electromagnetic wave signal transmission method and system based on a mine shaft, and relates to the technical field of signal transmission, and the method comprises the steps: obtaining mine shaft environment parameters and holographic electromagnetic wave signal basic setting parameters, carrying out the multipath propagation analysis based on the mine shaft environment parameters, and obtaining the multipath propagation characteristic data; performing signal delay spread simulation analysis on the multipath propagation characteristic data to obtain signal delay spread data, and performing inter-symbol interference association mining based on the signal delay spread data to obtain inter-symbol interference association data; signal modulation optimization design is carried out according to the intersymbol interference associated data, signal modulation optimization data are generated, holographic electromagnetic wave signal transmission planning is carried out through the signal modulation optimization data, holographic electromagnetic wave signal transmission planning data are obtained, and then signal transmission operation in the mine shaft is guided according to the holographic electromagnetic wave signal transmission planning data. The method has the effect of improving the holographic electromagnetic wave signal transmission efficiency.

This application discloses a signal reconstruction method, apparatus, electronic device, storage medium, and product. The method includes: acquiring a mixed signal to be processed; performing M-level wavelet decomposition on the mixed signal based on orthogonal wavelets to generate M high-frequency components and one low-frequency component; determining an adaptive filtering threshold corresponding to each high-frequency component, and performing hierarchical threshold filtering on the high-frequency components based on the adaptive filtering threshold to generate corresponding high-frequency target components; determining a hard filtering threshold corresponding to the low-frequency component, and performing threshold filtering on the low-frequency components based on the hard filtering threshold to generate corresponding low-frequency target components; and reconstructing the M high-frequency target components and the low-frequency target component to generate a target signal. This solution can remove ultra-low frequency drift signals from the mixed signal while also performing hierarchical threshold filtering to remove high-frequency noise from the mixed signal, significantly improving the algorithm's tracking ability and anti-interference performance for non-stationary signals.

The invention relates to the technical field of industrial control system physical layer state monitoring, and discloses an electromagnetic shielding effectiveness control system of a communication equipment connector, which comprises a protocol time sequence synchronization module, an idle noise acquisition module, a state identification and processing module and a decision and interface module, and after determining that continuous noise drift exists, the state identification and processing module firstly suppresses alarm output, communicates with other similar systems in a neighborhood so as to judge cooperative drift, and only releases suppression and outputs an alarm when determining that non-cooperative drift exists. An originally isolated single-point decision which may generate misjudgment due to global environment fluctuation is converted into a system-level diagnosis conclusion which is based on distributed consensus and can clearly distinguish local failure of the connector from global environment change, and the accuracy and reliability of state evaluation of the industrial control system in a complex electromagnetic environment are improved.

The application relates to the technical field of smart grids, in particular to a power line background noise identification method and device based on G3-PLC communication, which comprises the following steps: acquiring signal-to-noise ratio time sequence data of G3-PLC communication subcarriers, calculating background noise characteristic values according to the signal-to-noise ratio time sequence data, constructing a background noise feature vector according to the background noise characteristic values, performing clustering analysis on the background noise feature vector by using a K-Means algorithm, forming a noise mode cluster set with physical significance, and then mapping each cluster obtained by clustering into a power line background noise type based on a preset noise type mapping rule, so that the accuracy and reliability of power line background noise identification are significantly improved, and the method is suitable for actual power grid operation environments.

The invention relates to an interference elimination method and device and computer equipment. The method comprises the following steps: receiving an initial time domain signal on a time-frequency resource of a serving cell; wherein the initial time domain signal is a superposed signal of a first physical broadcast channel (PBCH) signal from a serving cell and a second PBCH signal from a same-frequency interference cell of the serving cell; pBCH decoding is carried out on the initial time domain signal to obtain first cell information; wherein the first cell information comprises a target synchronization signal of the first cell and PBCH block SSB center frequency point information; determining the first cell as a same-frequency interference cell according to the cell center frequency point information and the target SSB center frequency point information, and performing same-frequency interference elimination on the initial time domain signal according to the cell center frequency point information; wherein the cell center frequency point information comprises the actual SSB center frequency point information of the service cell and the actual SSB center frequency point information of the same-frequency interference cell. The method can effectively eliminate the same frequency interference and improve the communication quality.

The invention provides a signal modulation method, a decision feedback equalizer and a storage medium. The method comprises the following steps: performing amplitude estimation on a modulation signal x (t) to obtain an amplitude estimation value a (t) of a current period; the amplitude estimation values a (t-1), a (t-2),..., a (t-M + 1) and the amplitude estimation value a (t) in the past M-1 periods are balanced, an amplitude balance result z (t) is obtained, and M is an integer larger than 1; the differential phase p (t-i) of the modulation signal x (t) is determined, the differential phase p (t-i) is a differential phase result of x (t) and x (t-i), and i is an integer larger than 0; balancing the differential phases p (t-1), p (t-2),..., p (t-N + 1) in the past N-1 periods to obtain an actual differential phase w (t), N being an integer greater than 1; recovering the actual differential phase w (t) to a normal signal phase v (t); and demodulating to obtain a modulation result y (t) corresponding to the modulation signal x (t) according to the amplitude equalization result z (t) and the signal phase v (t). According to the signal modulation method provided by the invention, the equalization performance of the decision feedback equalizer can be improved.

This invention provides an FPGA-based encoding method for single-core cable logging, comprising: detecting whether the edge of the original transmitted signal changes; if the edge of the original transmitted signal changes, encoding the original transmitted signal using two pulse signals to obtain a final output signal in which positive and negative levels cancel each other out. This invention uses an FPGA module and an external driving circuit in synergy to encode the original transmitted signal, resulting in a final output signal in which positive and negative levels cancel each other out. This invention effectively avoids baseline drift-induced glitches that interfere with the signal and affect data accuracy, thus solving the problem of level fluctuations affecting the signal in single-core cable transmission for oil logging.

A device for transmitting first data to an external device and receiving second data from the external device is provided. The device includes: a voltage mode driver connected to a first node, the voltage mode driver including a pull-up resistor circuit and a pull-down resistor circuit, the pull-up resistor circuit including a plurality of pull-up resistors, and the pull-down resistor circuit including a plurality of pull-down resistors; a current source circuit connected to a second node and including a first current source and a second current source; a pre-driver configured to control the voltage mode driver and the current source circuit, based on the first data; a receiver connected to the second node and configured to obtain the second data based on a voltage level of the second node; and a hybrid resistor connected between the first node and the second node.

This invention belongs to the technical field of aviation transponder pulse overlap signal separation methods, specifically relating to a separation method applicable to Mode A / C aviation transponder pulse collision conditions. By analyzing the differential characteristics of the Mode A / C aviation transponder signal waveform in the time and energy domains, the pulse collision signal is effectively split. Based on the waveform definition characteristics of the Mode A / C aviation transponder signal, the pulse frame is accurately recovered from the separated signal, ultimately completing the separation process of the Mode A / C collision pulse signal. This invention requires only a single-channel receiver to achieve signal separation, reducing system implementation costs and engineering difficulty, effectively improving the system monitoring capability in densely overlapping electromagnetic environments, and providing an efficient and engineered solution for transponder pulse signal separation tasks in scenarios such as air traffic surveillance and low-altitude airspace management.

The invention provides a signal modulation identification method and system in an interference environment based on a neural network, and the method comprises the steps: obtaining a to-be-identified interference environment signal, inputting the to-be-identified interference environment signal into an interference adaptation module, and carrying out the correlation modeling of an interference feature and a signal feature, thereby obtaining an interference adaptation feature; inputting the interference adaptive features into an interference suppression layer of a signal modulation identification neural network, and carrying out interference component separation to obtain signal purification features; inputting the signal purification features into a modulation classification layer for modulation mode matching to obtain a preliminary modulation type identification result; then, the preliminary modulation type recognition result and interference type information in the interference adaptation features are subjected to correlation verification, and a final modulation type recognition result is obtained; and finally, generating a signal identification report containing modulation parameter description based on a final result, and sending the signal identification report to a target signal analysis terminal. The method can effectively cope with a complex interference environment, improves the accuracy and reliability of signal modulation identification, and provides powerful support for optimization of a communication system.

This invention provides an optimized system for improving the slew rate of a Line Driver, comprising a differential input module, a bias current module, an amplification module, an active load module, and a mirror load module. The differential input module receives the input signal and converts the voltage signal into a current signal. The bias current module provides a stable bias current to the circuit. The amplification module receives the current signal from the differential input module and achieves voltage gain. The amplification module is electrically connected to the active load module. The active load module can improve the amplification gain of the amplification module, replicate the current, and stabilize the output node. The mirror load module can replicate the signal amplification path of the amplification module to achieve symmetrical output, thereby improving the signal amplification effect and anti-interference reliability of the circuit and solving the problem of limited slew rate in traditional optimized systems for Line Drivers.

The application discloses a wireless ranging method and device of a power carrier dual-mode communication system, and belongs to the technical field of power carrier communication. The method comprises the following steps: receiving wireless signals sent by a sending end successively, and performing frequency domain transformation on the wireless signals to obtain frequency domain response signals; obtaining an impulse response signal of the frequency domain response signals in a time domain; calculating a multi-path gravity center of the impulse response signal under a multi-path channel condition, and determining a synchronization timing deviation corresponding to the wireless signals based on a deviation between the multi-path gravity center and a main path; calibrating sampling clock frequencies of the sending end and the receiving end based on the synchronization timing deviations corresponding to the wireless signals received successively, and performing a ranging operation after the calibration to obtain a ranging result. The application can realize accurate and stable wireless ranging for each node in the power carrier dual-mode communication system.

The utility model relates to the technical field of industrial communication interfaces, in particular to an RS485 self-adaptive communication circuit with intelligent reflection suppression. The circuit comprises an RS485 chip, an automatic transceiving circuit and a micro-control unit, the enabling end of the RS485 chip is connected with the micro-control unit through the automatic transceiving circuit, and the transceiving state of the RS485 chip is controlled by the micro-control unit; the circuit is characterized in that an electromagnetic compatibility circuit is arranged between the input and output ends of the RS485 chip and the wiring terminal, and the electromagnetic compatibility circuit comprises a transient voltage suppression circuit, a resettable fuse, a pi-type filter circuit and a gas discharge tube. According to the utility model, the EMC circuit is improved, the circuit protection capability is increased, and the inter-stage coupling interference is reduced; an automatic transceiving circuit is improved, and transceiving state switching time is shortened. Meanwhile, the number of capacitive elements in the voltage acquisition circuit and the current acquisition circuit is reduced, and stray capacitance and signal rising time are reduced.

The present application provides a communication method and a communication apparatus. The method comprises: receiving first indication information, the first indication information indicating a first port and a second port; receiving first data of the first port, the first data being obtained by precoding on the basis of a first precoding matrix, and the first precoding matrix being determined on the basis of a first multipath parameter of the first port; and demodulating the first data on the basis of the first precoding matrix and a second precoding matrix, the second precoding matrix being determined on the basis of a second multipath parameter of the second port. The first port and the second port can be determined by means of the first indication information. Therefore, when demodulating the received data, precoded by means of the first precoding matrix, of the first port, a multipath parameter of the second port can be used for interference processing, thereby improving the performance of data demodulation.

The invention discloses a robust self-interference suppression beamforming method based on a multi-missile collaborative scene, which comprises the following steps of: considering a non-ideal condition, constructing a coupling channel model containing a circular symmetry Gaussian distribution error, and constructing an expression of power of a transmitting signal and a self-interference signal. Based on a self-interference signal power expression, an optimization problem for self-interference suppression transmitted beam forming with robust estimation errors is constructed; wherein the optimization target is set to maximize the transmitting beam gain; the set constraint condition is that it is ensured that the power of self-interference signals coupled to all receiving array elements in the receiving sub-arrays is smaller than a set upper limit threshold value; and transmitting link full-feed power upper limit constraint. According to an optimization problem, an original non-convex opportunity constraint problem is converted into a convex problem to be solved through an approximation method of positive semi-definite relaxation and a Bernshi inequality, so that a transmitted beam weight vector solution is obtained, the robust self-interference suppression capability under a non-ideal coupling channel is realized, and normal receiving of a desired signal is ensured.

An electromagnetic tracking (EMT) system is configured for determining a frequency for generating at least a portion of a magnetic field signal using a transmitter coil of a plurality of transmitter coils. The EMT system configures a time-division multiplexed (TDM) control signal configured to cause the transmitter coil to transmit bursts of the magnetic field signal at the frequency. The EMT system configures a filter for filtering the TDM control signal, the filter configured to shape each burst to reduce or eliminate a harmonic artifact of the bursts. The EMT system causes the transmitter coil to generate the shaped bursts of the magnetic field signal. The EMT system receives, from a sensor, a sensor signal that corresponds to the magnetic field signal, the sensor including the output response indicative of the location of the sensor relative to the transmitter.

The utility model relates to communication technical field, concretely is a kind of gigabit ethernet port protection circuit.The protection circuit includes: difference signal positive electrode circuit and difference signal negative electrode circuit, for forming signal transmission path;Difference impedance matching circuit is used to suppress signal reflection;Power filter network circuit is used to filter high-frequency noise and suppress common-mode interference.The circuit architecture design of the utility model systematically solves the core technical problem in the high-speed transmission of gigabit ethernet port.In the signal transmission level, two-stage resistance-capacitance isolation and dynamic impedance matching mechanism construct the parameter self-adaptive signal transmission path, through the impedance buffer of series resistance, the direct current isolation of coupling capacitor and the dynamic adjustment of difference pair network, effectively suppress signal reflection and direct current bias interference, ensure the integrity of 10Gbps high-frequency signal in long-distance transmission.

A receiving device includes a data pin; a data buffer including a first input terminal configured to receive a data signal from the data pin, a second input terminal configured to receive a reference voltage, and an output terminal configured to output a comparison result between the data signal and the reference voltage as an output signal, a driver electrically connected between the data pin and the first input terminal, a reference voltage control circuit configured to output the reference voltage having a voltage corresponding to a reference voltage code to the second input terminal, and an adjustment circuit configured to apply an intermediate voltage of the data signal to the first input terminal using the driver, and configured to adjust the reference voltage code such that a voltage of the output signal reaches a target state.

The invention discloses a channel estimation method, related equipment, a storage medium and a computer program product. The method comprises the steps that a sending device determines a first symbol and first information, the first symbol is used for indicating semantics of an information source, and the first information is used for indicating the importance degree of the first symbol on information source reconstruction; in the process of superposing a second symbol to the first symbol, power is allocated for the first symbol and the second symbol based on the first information, and the second symbol is used for channel estimation; and sending the superposed first symbol to a receiving device through a first channel, the first channel having at least the characteristics of time selective fading and frequency selective fading. According to the technical scheme provided by the invention, under the scene of double selective channels, the pilot symbols are superposed on the semantic symbols, and the distribution of the pilot power is dynamically adjusted in combination with the importance of the semantic symbols, so that more accurate channel estimation and stronger anti-interference capability can be realized.

A device for transmitting first data to an external device and receiving second data from the external device is provided. The apparatus includes: a voltage mode driver connected to a first node, the voltage mode driver including a pull-up resistor circuit and a pull-down resistor circuit, the pull-up resistor circuit including a plurality of pull-up resistors, and the pull-down resistor circuit including a plurality of pull-down resistors; the current source circuit is connected to the second node and comprises a first current source and a second current source; a pre-driver configured to control the voltage mode driver and the current source circuit based on first data; a receiver connected to the second node and configured to obtain second data based on a voltage level of the second node; and a hybrid resistor connected between the first node and the second node.

The invention discloses a time domain gating roll-off compensation method and a computer readable medium, and the method comprises the steps: intercepting a target signal segment through a gating gate function, and carrying out the windowing processing of the frequency domain data of the target signal segment, and obtaining the frequency domain response data of a gating function; obtaining an S parameter of the target signal segment, and carrying out convolution processing on the S parameter and the frequency domain response data of the gating function to obtain the frequency response of the S parameter; judging whether the strobe gate function meets a preset condition or not; if the S parameter meets the preset condition, performing roll-off effect removal processing on the frequency response of the S parameter by utilizing renormalization to obtain the time domain gating frequency response after the roll-off effect removal of the S parameter; and if the S parameter does not meet the preset condition, performing roll-off effect removal processing on the frequency response of the S parameter by using an interpolation and normalization method to obtain the time domain gating frequency response after the roll-off effect removal of the S parameter. A renormalization and interpolation combined method is adopted to carry out roll-off effect removal processing on the frequency response of the S parameter, and the compensation effect is optimized.

A communication circuit for reducing recoil noise of an eye open monitor comprises a first sampler, a second sampler and a pre-amplifier, the first output end and the second output end of the pre-amplifier are connected with the first input end and the second input end of the first sampler respectively, and the first input end and the second input end of the second sampler are connected with the first output end and the second output end of the pre-amplifier respectively. An input signal is applied to the preamplifier and a first input of the second sampler, respectively, and when an edge of the sub-clock precedes an edge of the master clock, the first sampler samples a data value by comparing the input signal with a second reference voltage at the edge of the sub-clock, the second sampler samples a data value by comparing the input signal with a first reference voltage at an edge of the master clock, and when an edge of the sub-clock lags the edge of the master clock, the second sampler samples a data value by comparing the input signal with a second reference voltage at an edge of the sub-clock, a first sampler samples a data value by comparing an input signal to a first reference voltage at an edge of a master clock.

The invention discloses a link training method and system, electronic equipment and a storage medium, and relates to the field of data processing. The method comprises the following steps: acquiring a plurality of stable intervals of a differential link based on a fixed delay step length and a training code; calculating the ratio of each stable interval to the unit interval of the differential link; selecting a stable interval of which the ratio is an odd number after rounding up as an effective interval; and delaying the clock signal or the differential signal based on the delay amount corresponding to the central point of any effective interval so as to realize data alignment. On the basis of the processing, the effective interval with the ratio being an odd number after rounding up is selected, the stable interval with the center point not being the jump area is screened out, and therefore in the subsequent data alignment process according to the center point of the effective interval, the error that the collection edge of the clock signal is located in the jump area can be avoided.